Self-compensation sealing device

Abstract

The invention relates to a self-compensation sealing device which is suitable for rotary devices in industrial and mining enterprises, in particular to carrier rollers and the like. The self-compensation sealing device comprises a sealing ring, wherein the sealing ring is a C-groove sealing ring with a V-shaped rubbing surface; a C-shaped groove is formed on the circumference of the sealing ring; an O-shaped rubber cup ring is arranged in the C-shaped groove; the V-shaped rubbing surface is arranged at the aperture position of the sealing ring; an antiwear plastic sleeve is arranged in the aperture of the C-groove sealing ring with the V-shaped rubbing surface; the antiwear plastic sleeve is fixedly sleeved on a shaft; the C-groove sealing ring with the V-shaped rubbing surface is in rotary frictional connection with the antiwear plastic sleeve; the C-groove sealing ring with the V-shaped rubbing surface is prepared from an ultrahigh molecular weight polyethylene material with the molecular weight less than 3,000,000; and the antiwear plastic sleeve is prepared from an ultrahigh molecular weight polyethylene material with the molecular weight more than 5,000,000. The self-compensation sealing device has the advantages of wear resistance, self-compensation, corrosion resistance, high sealing property, impact resistance, long-time wear resistance and long service life.

Description

technical field [0001] The invention relates to a sealing device, in particular to a self-compensating sealing device, which is suitable for rotating devices of industrial and mining enterprises, especially for supporting rollers and the like. Background technique [0002] Idler rollers are widely used in belt transportation equipment in industrial and mining enterprises. The operating environment is relatively harsh, often accompanied by powder, dust, moisture and corrosive substances during operation, and most of the sealed bearings are made of iron materials. It is inconvenient to check and repair in the dark roadway, there are many maintenance personnel, it is not resistant to corrosion and wears quickly, the service life is short, and the inspection efficiency is low. In addition, the steel rolling bearings used in the idlers need regular maintenance, especially in the case of poor sealing, the steel bearings will greatly reduce their service life due to the infiltratio...

AI Technical Summary

Problems solved by technology

It is inconvenient to inspect and repair in dark lanes, there are many maintenance personnel, it is not resistant to corrosion and wears quickly, the service life is short, and the inspection efficiency is low

In addition, the steel rolling bearings used in the idlers need regular maintenance, especially in the case of poor sealing, the steel bearings will greatly reduce their service life due to the infiltration of damp, dust and corrosive substances in the working environment

Although some defects are partially solved and improved in some patented technologies, it cannot fundamentally solve the problem of short service life of idlers and low efficiency of checking and repairing idlers for damage

Most of them just use different sealing structures and materials to seal between the running roller and the metal shaft, because when these structures and materials are sealed with the iron shaft, the metal shaft itself has poor corrosion resistance and poor self-lubrication, and the sealing After the ring is worn out, it cannot provide enough self-compensating seal, and it will still seep after a long time, causing bearing failure, which seriously affects the normal operation and conveying efficiency of the conveyor belt, and the number of maintenance and inspection personnel is also greatly increased.

[0003] At present, some rollers use nylon sealing rings. Because of the expansion coefficient, the seals are easily worn when heated, and gaps are generated when cooled, resulting in leakage, and the sealing effect is poor; some labyrinth seals can only be dust-proof, not waterproof. The water that often penetrates during use will corrode and damage the bearing

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